Transmission device for motor-vehicles.



No. 732,944. PATENTED JULY '7, 1903, 0. JENA'TZY, FI-Ls.

, TRANSMISSION 'DEVIOE'FOR MOTOR VEHICLES.

APPLICATION FILED MAB. 1'1, 1903.

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UNITED STATES CAMILLE JENATZ Y, FILS,

fli'atented. July 7, 1903.

PATENT QFFICE.

OF BRUSSELS, BELGIUM.

SPECIFICATION forming part of Letters Patent No. 732,944, dated July '7,1903. Application filed March 1'7, I903. Serial No. 148,151. (No model.)

To all ZUhOWb it ntay concern:

Be it known that I, CAMILLE J ENATZY, Fils, engineer, a subject of theKing of the Belgians, residing at 222 Rue du Progres, Brussels, in theKingdom of Belgium, have invented certain new and useful Improvements inand Relating to Transmission Devices for Motor -Vehicles; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference beinghad to theaccompanying drawing, and to letters of reference marked thereon, whichforms a part of this specification.

This invention relates to a device for the progressive transmission ofthe effort of the motor to the wheels of a motor-vehicle of any kind.

The object of the invention is to permit of dispensing with speed-changegear and to provide a transmission device of great flexibility andsmoothness, whereby the resistance of the road and the power of themotor may be coordinated at each moment and with exactitude, while atthe same time the motor is completely protected from shocks andvibration.

The device is characterized by magnetic driving-gear arranged betweenthe shaft of the motor and the driving-shaft for the wheels of thevehicle by means, for example, of a field-magnet crown rigidly fixedupon the shaft of the motor and acting upon an armature rigidly mountedupon the driving-shaft for the wheels of the vehicle, the energyrequisite for this driving being supplied to the field-magnet crown bythe current of a dynamo operated by the motor.

The device is diagrammatically represented in the accompanying drawing.

Upon the shaft A of the motor B is rigidly mounted in place of the usualfly-wheel a fieldmagnet crown 0, carried by a cross-piece D, of suitablematerial. WVithin the field-magnet crown C is arranged an armature E,appropriately wound and disposed, which is rigidly fixed upon the shaftF, which acts directly upon the axle of the driving-wheels G of thevehicle by means of bevel-pinions H or any other convenient means.

The current of a dynamo I, operated by the mot-or B, is conducted to thecoils of the fieldmagnet crown C by collector-rings J, upon which rubthe brushes K, which are connected to the poles of the source ofelectricity I. One of these brushes is directly connected to the sourceof electricity, while the other is connected to this source by theintermediary of a switch L and a very elongated rheostat controlled bythe driver of the vehicle.

The operation of this device will be readily understood. WV-hen themotor is running and the field-magnet circuit is open, the motor rotateswith the field-magnet crown without driving the vehicle. VVhe'n thedriver closes the field-magnet circuit with interposition of theresistances M, a magnetic field is established in the crown O, thearmature E is driven, and the vehicle starts very slowly, owing to theweakness of the field. In proportion as the driver diminishes theresistance M the velocity of the armature E will tend to approach thatof the field-magnet crown O, and the velocity of the vehicle will attainits maximum at the moment of the saturation of the field. On the otherhand, as the field is weakened by the interposition of the resistances Min the circuit supplying the crown O the velocity will diminish and thearmature will be abandoned to its own inertia as soon as thefield-magnet circuit is interrupted.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is- 1. In combination with the running-gear, a dynamo, amotor operating same, a fieldmagnet crown operated by said motor, adrivin g-shaft, an armature carried by the dri vingshaft, and rheostaticmeans between said dynamo and field whereby to gradually increase anddecrease the speed of the armature.

2. In combination with a running-gear, a I

dynamo, a motor operating same, arevolving field operated by said motor,a driving-shaft, an armature carried thereby, and means between saiddynamo and field whereby to increase and decrease the current so thatthe armature may rotate at variable speeds.

3. In combination with a running-gear, a dynamo, a motor operating same,a revolving field operated by said motor, a driving-shaft, an armaturecarried thereby, and a rheostat thereby, a driving-shaft connected tothe driving-wheels,an armature carried by said shaft, a dynamo driven bythe motor, and a rheostat between said dynamo and field whereby thearmature may rotate at different speed with relation to the field.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

OAMILLE J'ENATZY, FILs. Witnesses:

GEORGES DE Rnsr, MoDEsTE CONARD.

